The Digestive System The digestive system is made up of the digestive tract—a series of hollow organs joined in a long‚ twisting tube from the mouth to the anus—and other organs that help the body break down and absorb food. Organs that make up the digestive tract are the mouth‚ esophagus‚ stomach‚ small intestine‚ large intestine—also called the colon—rectum‚ and anus. Inside these hollow organs is a lining called the mucosa. In the mouth‚ stomach‚ and small intestine‚ the mucosa contains tiny
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The Function and Mechanics of the Digestive System SCI/241 The Function and Mechanics of the Digestive System My 4 year old daughter asked me‚ “Mommy‚ how does food go to my stomach?” It is really weird the questions children ask but I had to explain. In this paper I will explain the function and mechanics of the digestive system. The body ’s method of taking the food we eat and breaking it down to obtain vital nutrients that will allow us to live and be healthy is digestion. According
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Structure and Function of the Human Digestive System By Caitlin Ong Organs of the Digestive System Mouth Structure: The mouth consists of the upper and lower jaw‚ that contain gums which hold teeth‚ the roof of the mouth is the palate and the tongue occupies the floor of the mouth. The salivary glands have ducts that open in the mouth. Function: The mouth is where the first step of digestion begins. Known as mechanical digestion‚ this involves chewing with your teeth to break the food
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DIGESTIVE ENZYMES AND THEIR FUNCTIONS Mouth -the oral cavity or the mouth contains salivary glands that secrete a wide range of enzymes to aid the first step of metabolism of food. The salivary gland secretes the enzyme lysozyme which has an antibacterial action. The enzymes secreted by the mouth mainly provide protection against bacteria. Betaine helps to maintain a fluid balance inside the mouth. The lists of digestive enzymes secreted by the oral cavity are mentioned in the table. Enzymes
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The five major structures of the brain are myelencephalon‚ Metencephalon‚ mesencephalon‚ diencephalon and telencephalon. The myelencephalon carries signals from the brain to the entire parts of the human body and it is also uniquely shaped looking like a little net. The Metencephalon is made up of ascending and descending tracts just like the myelencephalon. It has two major divisions which are pons and the cerebellum. The mesencephalon has two divisions also and they are the tectum and the tegmentum
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The Brain has five major structures . These structures include the mesencephalon‚ metencephalon‚ myelencephalon (or medulla)‚ telencephalon‚ and diecephalon. All of these brain structures contribute different functions within the human body. The brain’s first structure is the myelencephalon‚ which is also called the medulla. The myelencephalon is known as the most posterior part of the brain. The structure of the myelencephalon is made up of bundles of axons called tracts. These tracts carry
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processes is the function of the smooth muscle layer of the digestive system?| A)|Ingestion| B)|Secretion| C)|Mixing and propulsion| D)|Absorption| E)|None of the above| Ans:|C| |Link to: 23.1 The GI tract| 2.|Which of following processes is the primary function of the mouth?| A)|Ingestion| B)|Secretion| C)|Mixing and propulsion| D)|Absorption| E)|None of the above| Ans:|A| |Link to: 23.6 In the small intestine| 3.|Which of following processes is the primary function of the villi
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The principal structure of the digestive system is an irregular tube‚ open at both ends‚ called the alimentary (al-i-MEN-tar-ee) canal or the gastrointestinal (GI) tract. In the adult‚ this hollow tube is about 9 meters (29 feet) long Think of the tube as a passageway that extends through the body like a hallway through a building. Food must be broken down or digested and then absorbed through the walls of the digestive tube before it can actually enter the body and be used by cells The teeth
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THE DIGESTIVE SYSTEM Functions of the Digestive System • Ingestion- where in food from outside of the body enters the alimentary tract through the mouth • Digestion- which could be mechanical (physical breakdown of food into smaller pieces or chemical (enzymatic action) • Absorption of digested materials into venous circulation as well as lymphatic capillaries • Provision of nutrients to the cells of the body • Elimination of undigested materials ANATOMY AND HISTOLOGY OF THE DIGESTIVE
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DIGESTIVE SYSTEM Digestion is a process of breaking down complex food molecules into simple ones‚ suitable for absorption and their subsequent utilization in our body PURPOSE to convert complex food molecules into simpler ones‚ suitable for absorption and utilization production of energy‚ necessary for survival & vital chemical activity growth & development of the body repairing function reproductive function lactation FUNCTION to keep the
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